What products are formed by merging a 20% sodium hydroxide solution weighing 200 g

univerkov | March 20, 2021 | education

What products are formed by merging a 20% sodium hydroxide solution weighing 200 g and a solution containing 0.2 mol of aluminum chloride. Find the mass of the sediment.

reaction equation: 3NaOH + AlCl3 -> Al (OH) 3 + 3NaCl. Sediment – Al (OH) 3. Let’s calculate the amount of sodium hydroxide n (NaOH) = 0.2 * 200/40 = 1 mol. The amount of Al (OH) 3 is = the amount of AlCl3 according to the equation. According to the equation, the amount of sodium hydroxide is 3 times more, it turns out that it is in excess, which means we calculate by Al (OH) 3, because he is in short supply. m (Al (OH) 3) = 0.2 * 78 = 15.6g.
Answer: the mass of the sediment is 15.6 g.

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